I gave a timed test as part of a midterm exam (second time ever - I have had an in-person class until now). A few students did not show up online to take it so I contacted them and offered to give it to them later. I searched for how to give a quiz late and found the Canvas Q&A question "How do I make a quiz available before or after the due date?" It says
I clicked on the first link and it explained that one student can be selected under Assign To, rather than the entire class, so I changed that and clicked to save it. A box appeared asking something about whether I wanted to do that, but I didn't understand what it meant (obviously!), it seemed like I wanted to, and I went ahead. Now the entire set of quizzes from all the other students have disappeared.
My question is whether there is any way to recover those quizzes.
You are in luck. I just discovered how to fix this. In the assign box where you put that individual student name, add back "everyone" and your quizzes will be there. The directions are a bit misleading. What they should have told you to do was to click Add just below the Assign to section then enter the one student name.
Hope this helps.